Industrial Building Solutions eBook

I NDUSTR I AL BU I LDI NG SOLUT ION

50

— Power Distribution Motor starting and protection for HVAC Chiller

ABB’s solution for motor Starting and Protection (Air Cooled Chillers)

Offerings for motor rating 0.06 up to 560 kW

3 phse system, 400V, 50Hz

MMS for transformer protection

Tmax XT MA MCCB

Tmax XT MA MCCB

Switch Disconnector

Condenser Fans DOL starter

Condenser Fans DOL starter

Control transformer

MMS MS...

MMS MS...

MMS MS...

MMS MS...

AF contactors

AF contactors

Main controller

Thermal OLR

Thermal OLR

Star/delta timer

Interface relay

On/Off control

Compressor 2

Fan 5

Fan 6

Fan 7

Fan 8

Compressor 1

Fan 1

Fan 2

Fan 3

Fan 4

Emergency stop

Power circuit Control circuit

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